Journal of Materials Science: Materials in Electronics最新文献_第9页

Study on the microstructures and electrical properties of Y2O3 doped Ba0.85Ca0.15Hf0.1Ti0.9O3 lead-free piezoelectric ceramics Y2O3掺杂Ba0.85Ca0.15Hf0.1Ti0.9O3无铅压电陶瓷的组织与电学性能研究

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-28 DOI: 10.1007/s10854-026-17293-x

Haibo Cui, Wenjun Xu, Xuejun Guan, Jiayu Cui, Hongmei Yin, Hengwei Zhou, Yineng Huang

{"title":"Study on the microstructures and electrical properties of Y2O3 doped Ba0.85Ca0.15Hf0.1Ti0.9O3 lead-free piezoelectric ceramics","authors":"Haibo Cui, Wenjun Xu, Xuejun Guan, Jiayu Cui, Hongmei Yin, Hengwei Zhou, Yineng Huang","doi":"10.1007/s10854-026-17293-x","DOIUrl":"10.1007/s10854-026-17293-x","url":null,"abstract":"<div>Ba0.85Ca0.15Hf0.1Ti0.9O3+x mol% Y2O3 ((x) = 0.02–0.6) lead-free piezoelectric ceramics were fabricated via a conventional solid state reaction route, and their phase structures, grain size, dielectric, ferroelectric and piezoelectric properties were investigated. The ferroelectricity and multiphase coexistence concerning rhombohedral−orthorhombic−tetragonal (R−O−T) phases of all the ceramics were observed at room temperature; Low Y2O3 doping can lead to an increase of averagegrain size, while the excessive reduces it. The ceramics have the highest piezoelectric coefficient (d33) and Curie temperature (TC) at x = 0.1, and the values are 469 pC/N and 101.7 °C, respectively. And the maximum values of dielectric peak (ɛmax) and electromechanical coupling coefficient (kp )were also found for the ceramic, reaching 13,233 and 46%, respectively. The superior electrical performance is primarily attributed to its large and uniform grain size distribution, rendering it a promising candidate for applications in sensor technology and energy-efficient memory devices, etc.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Effect of synthesis methods on quaternary metals-based graphitic carbon nitride nanocomposites for supercapacitor and photocatalytic applications 合成方法对四元金属基石墨氮化碳纳米复合材料在超级电容器和光催化应用的影响

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-28 DOI: 10.1007/s10854-026-17341-6

Ayesha Hareem, Nosheen Farooq, Wardah Iman, Ravia Irshad, Asma Shaheen, Mohammed Mujahid Alam, Adnan Rabnawaz, Mohamed Hussien, Nikita Morozov, Rajesh Kumar Manavalan, Shahid Hussain

{"title":"Effect of synthesis methods on quaternary metals-based graphitic carbon nitride nanocomposites for supercapacitor and photocatalytic applications","authors":"Ayesha Hareem, Nosheen Farooq, Wardah Iman, Ravia Irshad, Asma Shaheen, Mohammed Mujahid Alam, Adnan Rabnawaz, Mohamed Hussien, Nikita Morozov, Rajesh Kumar Manavalan, Shahid Hussain","doi":"10.1007/s10854-026-17341-6","DOIUrl":"10.1007/s10854-026-17341-6","url":null,"abstract":"<div>Research on sustainable energy storage and conversion techniques is advancing due to rising energy use. Supercapacitors, high-power-density capacitors, are in high demand due to their quick energy release and absorption capabilities. In this study, NiO/Co3O4/BaO/Al2O3 (NCBA) and NiO/Co3O4/BaO/Al2O3@g-C3N4 (NCBACN) nanocomposites were synthesized, characterized, and their electrochemical performance was checked as a supercapacitor and for photodegradation of dyes. The NCBA and NCBACN nanocomposites were prepared using co-precipitation and ultra-sonication methods. The NCBACN electrode had a higher specific capacitance (2190 F/g) than the NCBA electrode (476 F/g). NCBACN demonstrated superior efficiency in reducing Rhodamine-B and Congo red dyes, with 97% and 94% degradation respectively. The NCBACN electrode material offers superior capacitive performance as a supercapacitor, with EIS and GCD curve results supporting its effectiveness and cost-effectiveness in industrial wastewater dye removal.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Metal oxide and its modification as photoanode for dye-sensitized solar cell: a review 金属氧化物及其改性染料敏化太阳能电池光阳极研究进展

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-28 DOI: 10.1007/s10854-026-17282-0

A. R. M. Khairudin, N. A. S. Aziz, M. Y. A. Rahman, A. A. Umar

{"title":"Metal oxide and its modification as photoanode for dye-sensitized solar cell: a review","authors":"A. R. M. Khairudin, N. A. S. Aziz, M. Y. A. Rahman, A. A. Umar","doi":"10.1007/s10854-026-17282-0","DOIUrl":"10.1007/s10854-026-17282-0","url":null,"abstract":"<div>Dye-sensitized solar cells (DSSCs) represent the promising third generation of solar cell technology. This review begins with the introduction of various generations of solar cells, followed by a discussion of the structure and charge-transport mechanisms of DSSCs, and the properties of several metal oxides. This paper provides a comprehensive review of the metal oxide modification as a photoanode for DSSCs taken from the latest publication. The metal oxides are modified using three main methods, namely, doping, composite, and coating. The modification reduces charge transfer resistance (Rct), energy gap (Eg) while increasing carrier lifetime (τ), thereby improving the power conversion efficiency (η) of the device. This paper highlights the relationship between η and Rct obtained from electrochemical impedance spectroscopy (EIS). Future prospects and challenges associated with each modification strategy are also discussed. The goal is to guide future research and development of DSSCs toward high efficiency and easy scalability for commercial use.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-026-17282-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Current–voltage (I–V) characteristics of Au/TiO2/p-GaAs (MIS) diode under illumination 照明下Au/TiO2/p-GaAs （MIS）二极管的电流-电压特性

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-28 DOI: 10.1007/s10854-026-17332-7

i. Ünal, R. Ertuğrul Uyar, A. Tataroğlu

{"title":"Current–voltage (I–V) characteristics of Au/TiO2/p-GaAs (MIS) diode under illumination","authors":"i. Ünal, R. Ertuğrul Uyar, A. Tataroğlu","doi":"10.1007/s10854-026-17332-7","DOIUrl":"10.1007/s10854-026-17332-7","url":null,"abstract":"<div>This study investigated the current–voltage (I–V) characteristics of an Au/TiO2/p-GaAs MIS diode under dark conditions and under illumination intensities ranging from 20 to 120 mW/cm2 at room temperature. X-ray diffraction (XRD) analysis was employed to characterize the crystal structure of the TiO2 film deposited on the GaAs substrate. Key electrical parameters—including the ideality factor (n), saturation current (I0), barrier height (ΦB), and series resistance (Rs)—were extracted using both the thermionic emission model and the Norde method, with the two approaches yielding consistent results. Upon illumination, the MIS diode exhibits pronounced photoconductivity, manifested by a significant enhancement in the reverse-bias current, while the forward-bias current shows minimal variation. Forward-bias I–V measurements were further used to evaluate the density of interface states (Nss). Charge-transport analysis reveals a transition from ohmic conduction to space-charge-limited conduction (SCLC) under forward bias. Besides, the current-conduction mechanism of the MIS diode was analyzed under forward bias. Overall, the results confirm that the produced MIS diode is sensitive to light and can be used in optoelectronic applications.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Efficient deep violet-blue emission and lattice vibrational characteristics of Nd2CoFeO6 double perovskite for multifunctional applications 多功能应用Nd2CoFeO6双钙钛矿的高效深紫蓝发射和晶格振动特性

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-28 DOI: 10.1007/s10854-026-17386-7

M. Dhilip

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Facile one-pot fabrication of quasi-spherical copper oxide electrode for supercapacitor 超级电容器用准球形氧化铜电极的简易一锅制备

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17263-3

Rushikesh G. Bobade, Shilpa Pande, Navnath S. Padalkar, Jong Pil Park, Pradip B. Sarawade, Shoyebmohamad F. Shaikh, Raisuddin Ali, Abu ul Hassan S. Rana, Revanappa C. Ambare

{"title":"Facile one-pot fabrication of quasi-spherical copper oxide electrode for supercapacitor","authors":"Rushikesh G. Bobade, Shilpa Pande, Navnath S. Padalkar, Jong Pil Park, Pradip B. Sarawade, Shoyebmohamad F. Shaikh, Raisuddin Ali, Abu ul Hassan S. Rana, Revanappa C. Ambare","doi":"10.1007/s10854-026-17263-3","DOIUrl":"10.1007/s10854-026-17263-3","url":null,"abstract":"<div>The chemical bath deposition (CBD) method has been employed to synthesize copper oxide (CuO) thin film electrodes for supercapacitor applications. The as-prepared CuO films were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy to investigate their structural, morphological and surface chemical properties. XRD analysis confirmed the formation of a monoclinic crystal structure with an average crystallite size of 30–35 nm. The FE-SEM images revealed a quasi-spherical like morphology, suggesting enhanced surface area for electrochemical activity. Electrochemical measurements indicated admirable pseudo-capacitive behavior, with a specific capacitance of 565 F/g at a current density of 7 A/g from galvanostatic charge–discharge. The CuO electrode also demonstrates excellent cycling stability, retaining 92.8% of its initial capacitance after 6000 cycles. These results highlight the potential of CBD grown CuO thin films as low cost, high efficiency electrode materials designed for next-generation energy storage technologies exhibit superior charge storage capability, rapid ion transport properties, and excellent cycling durability.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Preparation of a stable graphene dispersion in propylene carbonate and evaluation of its electrochemical performance 稳定的石墨烯分散体在碳酸丙烯酯中的制备及其电化学性能评价

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17329-2

Suguna Perumal, Raji Atchudan, Hyunjung Lee, Seung Woo Lee, Wonmok Lee

{"title":"Preparation of a stable graphene dispersion in propylene carbonate and evaluation of its electrochemical performance","authors":"Suguna Perumal, Raji Atchudan, Hyunjung Lee, Seung Woo Lee, Wonmok Lee","doi":"10.1007/s10854-026-17329-2","DOIUrl":"10.1007/s10854-026-17329-2","url":null,"abstract":"<div>Graphene and its composites have garnered considerable attention in various fields due to their exceptional properties. Obtaining stable graphene dispersion is challenging and limits its applications. Here, different amounts of graphite (G) were sonicated in propylene carbonate (PCB) and N-methyl-2-pyrrolidone (NMP) to prepare GPCB and GNMP dispersions, respectively. The stabilities of GPCB and GNMP and their properties were thoroughly studied using various techniques. In addition, the dispersion stabilities of G with commercial polyvinylpyrrolidone (PVPy) were compared in PCB and NMP solvents. So, G was sonicated with PVPy in PCB and NMP to obtain GPVPy_PCB and GPVPy_NMP dispersions, respectively. Among the prepared dispersions, the GPCB and GPVPy_PCB dispersions remained stable for months. Graphene sheets in GPCB and GPVPy_PCB were smaller and thinner than in G, GNMP, and GPVPy_NMP. Furthermore, the insitu polymerization of vinylpyrrolidone (VPy) was performed on pre-treated G with PCB that yielded insituPVPy_GPCB. The insituPVPy_G composites were obtained by insitu polymerization of VPy on G without pre-treatment. The insituPVPy_GPCB composite exhibited thinner graphene sheets and improved properties. This consequence reveals an efficient method for preparing stable graphene dispersions. The electrochemical studies were conducted using composites derived from stable dispersions. Electrochemical measurements of GNMP, GPCB, and G were conducted by cyclic voltammetry using a standard three-electrode system in 3 M KOH. The calculated specific capacitances of the GNMP, GPCB, and G are approximately 73, 109, and 51 F g−1 at a scan rate of 50 mV s−1, respectively. This work provides a foundation for the development of exfoliated graphene materials and their electrochemical studies.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of microstructure and enhancement of electrochemical properties of Zn–Ni–Co ternary metal oxide nano-anode materials Zn-Ni-Co三元金属氧化物纳米负极材料的微观结构优化与电化学性能提高

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17305-w

Tao hongjing, Liu chi, Mao liwei, Huang xinzhe, Guoxu Zheng

{"title":"Optimization of microstructure and enhancement of electrochemical properties of Zn–Ni–Co ternary metal oxide nano-anode materials","authors":"Tao hongjing, Liu chi, Mao liwei, Huang xinzhe, Guoxu Zheng","doi":"10.1007/s10854-026-17305-w","DOIUrl":"10.1007/s10854-026-17305-w","url":null,"abstract":"<div>In this paper, zinc–nickel–cobalt ternary metal oxides were selected as the research object, and novel Zn–Ni–Co ternary oxide nano-anode materials were successfully synthesized by a simple solvent-thermal method, and then the anode materials were made to have different numbers of folds by controlling the volume ratios of the components in the mixed solvents. The nano-anode material with more folds has a larger specific surface area, which gives it excellent electrochemical performance when used as an anode material for lithium-ion batteries. Electrochemical analysis of the ZnNiCoOn2 (methanol-to-water volume ratio of 3:4) nano-anode materials prepared from mixed solutions with different volume ratios showed that the ZnNiCoOn2 electrode was able to maintain a capacity of 377.7 mAh∙g⁻1 when the current density is returned to 0.1 A g⁻1 after rate performance tests, which was a good cycling performance. At different current densities, the ZnNiCoOn2 electrodes consistently delivered higher power output than the ZnNiCoOn1 (with a methanol-to-water volume ratio of 2:5) electrodes. When the current density was returned to 0.1 A g⁻1, the ZnNiCoOn2 electrodes still maintained a capacity of 387.2 mAh g⁻1. Considering their high electrochemical performance and simple preparation, we believe that these unique ZnNiCoOn2 nanosheets are promising anode materials for energy lithium-ion batteries. The novelty of this work lies in the precise control of the wrinkle density in Zn–Ni–Co ternary metal oxide nanosheets simply by adjusting the methanol-to-water volume ratio, which significantly enhances their lithium storage performance as anodes for lithium-ion batteries. This strategy offers a new insight into the efficient design and performance optimization of ternary oxide nanostructures.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical PANI/g-C3N4/ZnO ternary systems for high-efficiency photocatalysis and tailored dielectric properties 分级PANI/g-C3N4/ZnO三元体系用于高效光催化和定制介电性能

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17348-z

Abhishek Hiremath, Jayadev Pattar, S. Sarvesh Chandra, H. N. Anil Rao, R. Sreekanth, K. Mahendra, S. R. Manohara

{"title":"Hierarchical PANI/g-C3N4/ZnO ternary systems for high-efficiency photocatalysis and tailored dielectric properties","authors":"Abhishek Hiremath, Jayadev Pattar, S. Sarvesh Chandra, H. N. Anil Rao, R. Sreekanth, K. Mahendra, S. R. Manohara","doi":"10.1007/s10854-026-17348-z","DOIUrl":"10.1007/s10854-026-17348-z","url":null,"abstract":"<div>This study reports the synthesis and multifunctional performance of hierarchical PANI/g-C3N4/ZnO ternary composites prepared via in situ chemical oxidative polymerization technique. The synergistic integration of polyaniline (PANI), graphitic carbon nitride (g-C3N4), and zinc oxide (ZnO) has been studied for structural, optical, and electrical characteristics, as confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), photoluminescence (PL) spectra, field emission-scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDAX) analyses, Brunauer–Emmett–Teller (BET) and X-ray photoelectron Spectroscopy (XPS). The photocatalytic efficiency of the composites was evaluated by measuring the degradation of malachite green (MG) under UV irradiation. The ternary composite achieved 96.5% degradation efficiency within 80 min, significantly outperforming pure PANI 58.2%. Radical scavenger experiments identified the dominant reactive species, enabling a detailed discussion of the underlying degradation mechanism. Dielectric studies revealed a lower dielectric constant and higher dielectric loss, indicating strong interfacial polarization effects. Furthermore, Nyquist plot analysis showed a low charge transfer resistance (Rct) (16.99 kΩ) and a short relaxation time (0.4 µs), confirming superior charge-transport behavior. These findings highlight the PANI/g-C3N4/ZnO composite as a promising bi-functional material with potential applications in environmental remediation and advanced electronic devices.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dielectric response, impedance spectroscopy, and conduction behavior of YFe0.5Cr0.5O3 ceramics YFe0.5Cr0.5O3陶瓷的介电响应、阻抗谱和导电行为

IF 2.8 4区工程技术

Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17262-4

Q. S. Fu, J. Zheng, B. Meng, L. C. Zheng, S. L. Yuan

{"title":"Dielectric response, impedance spectroscopy, and conduction behavior of YFe0.5Cr0.5O3 ceramics","authors":"Q. S. Fu, J. Zheng, B. Meng, L. C. Zheng, S. L. Yuan","doi":"10.1007/s10854-026-17262-4","DOIUrl":"10.1007/s10854-026-17262-4","url":null,"abstract":"<div>Polycrystalline YFe0.5Cr0.5O3 samples with a perovskite structure were prepared via a standard solid-state synthesis method. X-ray diffraction data confirmed that the compound adopts an orthorhombic crystal system with the Pnma space group. Scanning electron microscopy images revealed a uniform microstructure characterized by grains with an average size of approximately 1.03 μm. Evaluation of the electrical modulus further suggested the presence of a relaxation mechanism deviating from Debye-type behavior. Impedance spectroscopy indicated that the electrical properties are governed by contributions from both grains and grain boundaries. The comparable activation energies obtained for conduction and relaxation processes suggest a common origin for these mechanisms. Furthermore, the near-unity slope of the log–log plot of DC conductivity versus hopping frequency indicates that charge transport is predominantly governed by a hopping mechanism, with doubly ionized oxygen vacancies identified as the charge carriers. Scaling analyses of the electrical modulus, impedance spectroscopy, and conductivity data further reveal that both relaxation and conduction processes are invariant with temperature. Additionally, the distinct peak frequencies observed in the modulus and impedance spectra corroborate the coexistence of charge carriers exhibiting localized and non-localized conductive behavior. The fraction of charge carriers associated with localized motion increases at elevated temperatures. The sample exhibits low dielectric constants and dielectric losses at high frequencies, along with high electrical resistivity, positioning it as a suitable candidate for high-frequency applications and microwave absorption devices.</div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0